The Orioles announced Thursday that theyve placed infielder/outfielder on the 10-day injured list due to a subluxation (i.e. partial dislocation) of his left elbow. Fellow infielder/outfielder is up from Triple-A Norfolk in his place. Baltimore also optioned righty to Norfolk following last nights MLB debut and recalled righty , adding a fresh arm to the bullpen. Mateo suffered the injury on Tuesday in a collision with shortstop when both infielders slid for an up-the-middle grounder ( ). Its not clear yet how long hell be sidelined. Manager Brandon Hyde told the Baltimore beat that Mateo will mi s some time, but theres still enough swelling to obfuscate the Beau Bennett Jersey full recovery picture ( ). While Mateo didnt require immediate surgery, his arm was placed in a cast on Tuesday. Hell eventually receive a second opinion, Weyrich , and Hyde added that its too soon to tell whether Mateo will need surgery at some point. With Mateo out for an indefinite period, Norby will get some regular playing time at second base, Hyde revealed. Its a notable development both in the sense that Norby has ranked among the systems best prospects since he was selected in the second round of the 2021 draft and in the sense that Norby has been a oft-speculated trade candidate as the Os look to upgrade their pitching staff. The Orioles po se s enough infield depth that they could still trade Norby and can both play second base, and top prospects and are looming in the upper minors but that outcome seems le s likely now that hes ticketed for a near-everyday role in the big leagues. Mateo, 29, has been the Orioles primary second baseman this season. Hes batted just .229/.267/.401 on the year. Thats 13% worse than league-average, by measure of wRC+, but Mateo has provided modest pop (five homers, .172 ISO) and plenty of value on the basepaths (13-for-15 in steals). Defensive metrics feel hes been roughly average with the glove his penchant for highlight-reel plays not withstanding. With what seems like a notable absence and even a potential for surgery on the table, Mateos outlook in Baltimore becomes cloudy. Hes due for one more arbitration raise this offseason and would reach free agency following the 2025 campaign. Given the po sibility of a long layoff, the teams enviable infield depth and the fact that Mateo is owed a raise on a $2.7MM salary, he could again emerge as an offseason trade candidate or non-tender candidate, depending on the ultimate prognosis for his injury. The 24-year-old Norby isnt likely to be a defensive upgrade but can be reasonably expected to provide a boost to an already potent lineup. Hes hitting .297/.389/.519 in Norfolk (133 wRC+) with 16 home runs, 21 doubles, a triple, 13 steals (in 16 tries) and a stout 12.5% walk rate. Norbys 27.7% strikeout rate with the Tides is a red flag, but punchouts havent been a long-running problem for the East Carolina University product. Norby made his big league debut earlier this season, appearing in four games and going 3-for-14 with a home run before being sent back down. He cant accrue a full year of service in 2024, meaning hell still be under club control for another six full seasons. Hes in the first of his three minor league option years and wont be arbitration-eligible until the 2027-28 offseason at the earliest. Pierre Larouche Jersey